Hi Shubho,
I hope this response hasn't come too late for you. You've got a good question.
Here are 3 sources that will answer your query about breaks provided during the PMP exam from home:
1)
Gabriella Dellino, PMP, provided a thorough answer about breaks during the online test here:
PMP Exam Break (10 min)
She also has a short video found on the PMI website with 3 recommendations. Her third recommendation talks about the breaks. It's very good!
Online Proctoring Exam Tips
2)
PMI provides good information here:
Online Proctored Testing for PMI Certifications
3)
Pearson VUE also describes the breaks here:
Online testing for PMI
Shubho, I wish you the best in your endeavors!